Safety tip air nozzle

ABSTRACT

An air nozzle is disclosed having a tubular body with a plurality of radially directed poles communicating with its axially disposed bore. Coaxially around and spaced from the body is placed a sleeve shielding the radial holes. The sleeve and body are so shaped that the end of the sleeve removed from the tip or forward opening is readily swaged around the body. The other end of the sleeve is axially spaced from the forward opening so that the tip extends a substantial distance therefrom whereby if the forward opening happens to be held next to any part of a person&#39;&#39;s body, air can readily escape through the radial holes and be diverted forward without causing damage.

United States Patent [1 1 Di Loreto July 22, 1975 [54] SAFETY TIP AIRNOZZLE 626,158 7/1949 United Kingdom 239/499 [76] inventor: Edward DiLoreto, 10402 River Rd.,

Y, Calif. 90241 Primary Examiner.lohn J. Love [22] Filed: June 29 1973Attorney, Agent, or Firm-Dominick Nardelli [2]] Appl. No.: 375,202

[57] ABSTRACT 236533623 An air nozzle is disclosed having a tubular bodywith a [58] Fie'ld 6 499 520 plurality of radially directed polescommunicating 5 6 with its axially disposed bore. Coaxially around andspaced from the body is placed a sleeve shielding the radial holes. Thesleeve and body are so shaped that [56] References cued the end of thesleeve removed from the tip or forward UNITED STATES PATENTS opening isreadily swaged around the body. The other 1,735,490 11/1929 Barley239/520 X end of the leeve is axially spaced from the forward 1,995,9343/1935 Marigold 239/424 X opening so that the tip extends a substantialdistance 2,655,219 10/1953 Ensr nmger 239/520 therefrom whereby if theforward Opening happens to g et 12 be held next to any part of a personsbody, air can 3735778 5/1973 gl 239/424 X readily escape through theradial holes and be di- Y verted forward without causing damage.

FOREIGN PATENTS OR APPLICATIONS 1,408,538 7/1965 France 239/291 2Claims, 4 Drawing Figures 2| I6 220 I? l5 PATENTEDJUL22 ms is, 8 95 757AIIIIIIIIIII J'QQ \\\wnmm 1 SAFETYTIP AIR NozzLE FIELD OF THE INVENTIONBACKGROUND OF THE INVENTIO An air nozzle must have theinherentcharacteristics of providing a flow of air with sufficient velocity toremove unwanted particles from a work piece, even though these particlesmay have substantial density. For this reason and because air is used tooperate many different types of equipment in a shop, the pressure of theair supply is maintained approximately at 100 lbs. per square inch. Thismeans if one holds his hand against the tip thereof, all the pressure isdirected thereagainst which high pressure could be dangerous if appliedto certain parts of a body. Therefore safety regulations have beenadopted in many communities requiring that the air pressure at a sealedtip of a nozzle can be no more than, for example, 30 lbs. per squareinch. Therefore, to eliminate the use of pressure regulators in the airlines and to also have available the higher pressures when needed,safety air nozzles have been adopted with radially directed holes comingout of the sides. This has the disadvantage that the air could escaperadially at high velocity and this high velocity air could be directedwhere it is not supposed to be directed and may be dangerous.

OBJECTS OF THE INVENTION An object of this invention is to provide asafety tip air nozzle whereby air is only directed in a forwarddirection.

Another object is to provide a means for mounting a shielding sleevearound the radial holes formed in air nozzles.

Another object is to provide a shielding sleeve around the radial holesin an air nozzle wherein the end of the sleeve remote from the tip isbonded to the body of the nozzle.

Another object is to provide a shielding sleeve and an air nozzle bodywherein the end of the sleeve is economically swaged around the body.

Another object of this invention is to provide a method for producing aneconomical, rugged, safety tip for an air nozzle.

These and other objects and features of advantage will become moreapparent after studying the following detailed description of thepreferred embodiment of my invention, together with the appendeddrawings.

BRIEF DESCRIPTION OF THE DRAWING ETAILE DECRIPTIQN or THE DRAWING FIG. 1shows a safety tip air. nozzlewith my novel features. The air nozzle 11has .abarrel 15, a piston grip 13, and a safety tip 12..Attachedtothegrip 13 is a standard air supply hose 14. The grip 13 is shown heldby a persons left hand while the right hand is held in way of the airstream exiting the. tip 12 to demonstrate its safety features; I

My novel tip 12 is more fully shown in FIGS. 2 and 3. The tip has atubular body 16, having a standard male-type thread 17 formed at one endthat conveniently screws into a suitable female thread 18 formed in theend of the barrel 15 of the air nozzle. The other end of the body 16 hasa cylindrical section 19 wherein oppositely disposed flat surfaces 21are formed at its end to allow a standard open-end wrench (not shown) toengage thereto to facilitate mounting and removal of the tip 12 from thebarrel 15. Between the section 19 and the thread 17 is formed a collar22. The collar 22 has a flat radially disposed surface 22a that isperpendicular to the axis of the body 16. Formed in the section 19 andspaced from the surface 220 are for example, four radially directedholes 23. Around the collar 22 and section 19 is mounted the tubularsleeve 24 having one end fixed, for example, by swaging to the collar22. The other end of the sleeve 24 is axially spaced from the other endof the section 19, for example, approximately three-quarters of an inchor a sufficient distance so that no matter how much one pushes the tipagainst the hand or into any part of a persons body, an annular opening26 formed between the sleeve 24 and section 19 cannot be sealed.

Another novel feature of my safety tip 12 is the economical method inwhich it can be made and assembled. The body 16 is so shaped that it canbe readily machined from a round metal stock in a standard screwmachine. The sleeve 24 is also shaped so that it can readily be machinedfrom a cylindrical metal stock. The inside diameter of the sleeve 24 isslightly smaller than the diameter of the collar 22 and more than thediameter of section 19. From one end of the sleeve 24, a counter bore 26(FIG. 4) is formed, having substantially the diameter of the collar 22to form, for example, a slip fit. The sleeve 24 is assembled onto thebody 16, as shown in FIG. 4, with the surface 22a of the collar 22 upagainst the shoulder formed at the bottom of the counter bore 26. Theend of the sleeve 24, at the counter bore 26, is rolled or swaged sothat the end rolls over the back of the collar 22 into the shape shownin FIG. 3. To facilitate the swaging operation, the collar 22 is formedwith a champer or conical surface 27, for example, 45 degrees.

Having described the preferred embodiment of my invention, one skilledin the art, after studying the above description of the preferredembodiment, could devise other embodiments without departing from thespirit and scope of my invention. Therefore the invention is not limitedto the described embodiment, but includes all embodiments coming withinthe scope of the claims.

I claim:

1. An air nozzle comprising:

a barrel having an axial passageway with threads formed on the endthereof;

a tubular body having formed at one end threads adapted to engage tothreads in said barrel;

said body having at least oneradially directed hole communicating withthe center passageway thereof and space between the threads thereon andthe other end of said body; I

said threads onsaid-barrel being female threads;

said body being cylindrical and said threads-being male threads; 7

a cylindrical annular collar formed on said body between said threadsand holes thereon; a'cylindrical sleeve having an inside diameter lessthan the outside diameter of said collar and more than the outsidediameter of said body; said sleeve having a counterbore formed from onethe other end thereof.

1. An air nozzle comprising: a barrel having an axial passageway withthreads formed on the end thereof; a tubular body having formed at oneend threads adapted to engage to threads in said barrel; said bodyhaving at least one radially directed hole communicating with the centerpassageway thereof and space between the threads thereon and the otherend of said body; said threads on said barrel being female threads; saidbody being cylindrical and said threads being male threads; acylindrical annular collar formed on said body between said threads andholes thereon; a cylindrical sleeve having an inside diameter less thanthe outside diameter of said collar and more than the outside diameterof said body; said sleeve having a counterbore formed from one endthereof wherein the diameter is of a size to slip around said collar;and means to allow the bonding of said sleeve to said collar.
 2. Thenozzle of claim 1 wherein: said collar has a surface on the sideopposite said threads, which surface is disposed radially and achampered surface formed on the opposite side thereof; said body havingaxially parallel surfaces formed at the other end thereof.